Steam-boiler



(No Model.)

W.- D. HOXIE. STEAM BOILER.

No. 595,852. Patented Deo.21, 1897.

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UNITED STATES PATENT OFFICE.

WILLIAM D. HOXIE, OF BROOKLYN, NEW YORK.

STEAM -BOILER.

SPECIFICATION forming part of Letters Patent No. 595,852, dated. December 21, I897. Application filed March 13, 1897. Serial No. 627,382. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM D. HOXIE, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Steam-Boilers, of which the following is a specification.

Heretofore in this type of boiler the inclined water-tubes were set at an acute angle with the vertical face or front of the boi1erin other words, were pitched downwardly from the front to the rear-the combustion-space within the furnace being highest at the front and lowest at the rear portion. This arrangement of the inclined water-tubes also left a vacant vertical space above the rear end of the tubes. The present invention consists in reversing the inclination of the watertu.besthat is, directing them upwardly from the front to the rear at an obtuse angle with the vertical face or front of the boiler-thus increasing the capacity of the combustionchamber of the furnace at its rear part and transferring the vacant space above the tubes from the rear to the front of the boiler and locating the steam and water drum at the front within this space, whereby it and its attachments are rendered more accessible and convenient for use and the whole structure made more compact. Another great advantage in this reverse arrangement of the watertubes is that they pitch downward toward the front of the boiler, which enables them and their spaces to be readily cleaned, removed, or repaired from directly within the fire-room.

In the accompanying drawing a side elevation, partly in section, of a boiler is shown embodying the improved arrangement, A A representing the vertical headers; B, the intermediate inclined water-tubes; O, the furnace with its door 0, and D the steam and water drum with its water-gage d, these parts constituting the main essential elements in the structure, that are only necessary to refer to herein as explanatory of the appended claim.

By the construction and relative arrangein ent of the parts above enumerated and illustrated in the drawing it will be observed that the combustion-chamber of the furnace is enlarged atits rear portion, which allows the gases to expand and give out their full heating efiect as they pass to the inclined watertubes which form the principal generating feature of the boiler, the gases being directed through and around the same by the use of well-known baffle-plates and by the also wellknown staggeredarrangement of the tubes with respect to each other or to each vertical series. The reverse inclination of the watertubes is also of great practical importance with reference to placing, removing, or clean ing the same. The ends adjacent to the fireroom are brought down within more convenient reach for handling, and in cleaning the natural tendency of the dirt is to gravitate toward the cleaner. By this arrangement the'steam and water drum D is located on the extreme front of the boiler, which renders it more accessible for inspection, setting up, or repairs, and its usual appendages, like the water and pressure gages, gage-cocks, &c., are brought within the nearest possible association with the attendant.

This new type of boiler is especially adapted for marine uses wherein a series of boilers are employed and which are frequently located upon opposite sides within the hull of the vessel, the fire-room being located intermediate of the same.

Having now described my invention sufficient in detail as explanatory of the claim, I Wish it to be understood that I desireto secure by Letters Patentthe broad combination of parts as set forth in the following claim:

In a sectional steam-boiler of the type described, the combination with the reversed inclined water-tubes of a transverse steam and water drum, located at the front of the boiler in the space above said tubes, as shown and described.

WILLIAM D. HOXIE.

Witnesses: v

OHAs. W. FORBES, S. V. WALKER. 

